[WIP] Support tracing B3 headers

[slinkydeveloper]

Signed-off-by: Francesco Guardiani [email protected]

Fixes #725

Proposed Changes

• 🎁 Support configuration of tracing context injectors.
• 🎁 Support context extraction both from b3 and w3c headers

Release Note

:gift: Support context extraction both from w3c and b3 headers transparently
:gift: Support configuration of tracing context injectors. Now you can specify in the config-tracing ConfigMap whether you want to emit tracing headers in w3c format, b3 format or both 

Docs

Perhaps we need that?

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[codecov]

Codecov Report

Merging #1076 (3a943d1) into main (e6ca0b4) will decrease coverage by 4.16%.
The diff coverage is 81.08%.

@@             Coverage Diff              @@
##               main    #1076      +/-   ##
============================================
- Coverage     79.91%   75.75%   -4.17%     
- Complexity      462      469       +7     
============================================
  Files            58       87      +29     
  Lines          1653     3023    +1370     
  Branches        138      141       +3     
============================================
+ Hits           1321     2290     +969     
- Misses          259      565     +306     
- Partials         73      168      +95     

Flag	Coverage Δ
java-unittests	80.07% <81.08%> (+0.15%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...nting/kafka/broker/core/tracing/TracingConfig.java	74.10% <81.08%> (+0.70%)	⬆️
control-plane/pkg/security/secret.go	97.89% <0.00%> (ø)
control-plane/pkg/reconciler/kafka/topic.go	87.50% <0.00%> (ø)
control-plane/pkg/core/config/utils.go	75.00% <0.00%> (ø)
control-plane/pkg/reconciler/base/reconciler.go	72.72% <0.00%> (ø)
...ane/pkg/apis/eventing/v1alpha1/kafka_sink_types.go	75.00% <0.00%> (ø)
...lane/pkg/reconciler/base/receiver_condition_set.go	0.00% <0.00%> (ø)
control-plane/pkg/reconciler/broker/controller.go	76.38% <0.00%> (ø)
.../pkg/apis/eventing/v1alpha1/kafka_sink_defaults.go	100.00% <0.00%> (ø)
control-plane/pkg/security/config.go	53.33% <0.00%> (ø)
... and 22 more

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[knative-prow-robot]

@slinkydeveloper: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
pull-knative-sandbox-eventing-kafka-broker-build-tests	3a943d1	link	/test pull-knative-sandbox-eventing-kafka-broker-build-tests

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[github-actions]

This Pull Request is stale because it has been open for 90 days with
no activity. It will automatically close after 30 more days of
inactivity. Reopen with /reopen. Mark as fresh by adding the
comment /remove-lifecycle stale.

[pierDipi]

/remove-lifecycle stale
/lifecycle frozen

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/remove-lifecycle stale
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[matzew]

/close

see #1278

[knative-prow-robot]

@matzew: Closed this PR.

In response to this:

/close

see #1278

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